Could it be in the room we had a talk last night you left your keys?A. that; thatB. wher

问题补充：

Could it be in the room we had a talk last night you left your keys?

A. that; that

B. where; that

C. where; where

D. that; where

答案：

A. that; that

(答案→)B. where; that

C. where; where

D. that; where

解析：考查定语从句及强调句。句中where引导定语从句，先行词room在从句中作地点状语，that引导强调句，选B。